Kerry L Kovacs

US Patent:

49450247, Jul 31, 1990

Filed:

Nov 10, 1988

Appl. No.:

7/269528

Inventors:

Kerry Kovacs - Centerville OH
Amy Burkholder - Kettering OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

G03C 700
G03C 168

US Classification:

430138

Abstract:

A process for forming full color images using a photosensitive material which includes a support having a layer of photosensitive microcapsules on the surface thereof, said photosensitive microcapsules including a first, a second and a third set of microcapsules uniformly distributed on said surface; said first set of microcapsules contains a cyan image-forming agent and a first photohardenable composition sensitive in a first wavelength band, said second set of microcapsules containing a magenta image-forming agent and a second photohardenable composition sensitive in a second wavelength band, and said third set of microcapsules containing a yellow image-forming agent and a third photohardenable composition sensitive in a third wavelength band; said process comprising the steps of: uniformly exposing said photosensitive material to radiation within at least one of said first, second, and third wavelength bands in an amount sufficient to sequester oxygen present in said microcapsules and thereby adjust the gamma of at least one of said first, second and third sets of microcapsules such that it more closely approximates the gamma of the other of said microcapsules; image-wise exposing said photosensitive material to radiation within said first, second and third wavelength bands; and subjecting said microcapsules to a uniform rupturing force to cause said microcapsules to rupture and release image-wise said cyan, magenta and yellow image-forming agents.

US Patent:

51962870, Mar 23, 1993

Filed:

Aug 9, 1990

Appl. No.:

7/565388

Inventors:

William A. Hammann - Centerville OH
Kerry Kovacs - Centerville OH
Margaret T. Thomas - Medway OH
Ranganatha Raghaven - Spring Valley OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

G03C 172

US Classification:

430138

Abstract:

A process for producing photosensitive microcapsules having an extended dynamic range and the microcapsules produced thereby are disclosed; the process includes: (a) providing an emulsion of a multiplicity of droplets of an internal phase in a continuous phase; said internal phase including a photohardenable or photosoftenable composition and an image-forming agent wherein the composition of said internal phase incrementally or continuously varies; and (b) forming a wall around said droplets.

US Patent:

50118854, Apr 30, 1991

Filed:

Oct 27, 1989

Appl. No.:

7/428098

Inventors:

Kerry Kovacs - Centerville OH
Margaret T. Thomas - Medway OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

C08L 7504

US Classification:

524591

Abstract:

The present invention is directed to a method for preparing microcapsules which comprises: preparing an aqueous dispersion or emulsion of a hydrophobic oily core material containing a polyvalent isocyanate, a polyvalent isothiocyanate, or an adduct thereof, having an anionic moiety; and forming capsule walls around the droplets of said oily core material.

US Patent:

48408662, Jun 20, 1989

Filed:

Mar 24, 1988

Appl. No.:

7/172624

Inventors:

Kerry Kovacs - Centerville OH
William Simpson - Centerville OH
Amy L. Burkholder - Kettering OH
Russell K. Messer - Franklin OH
Teresa M. Thomas - Springfield OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

G03C 146
G03C 172
G03C 500
G03C 1495

US Classification:

430138

Abstract:

A photographic material exhibiting improved photographic characteristics comprising a photographic material comprising a support having a layer of microcapsules thereon, and an image-forming agent being associated with said microcapsules, said microcapsules including a mixture of a first subset of microcapsules and a second subset of microcapsules, said first and second subsets of microcapsules being associated with an image-forming agent for the same color, and said first subset of microcapsules providing a higher film speed than said second subset of microcapsules when said first and second subsets of microcapsules are exposed to a broad band white light source and developed under identical conditions.

US Patent:

51125404, May 12, 1992

Filed:

Dec 14, 1989

Appl. No.:

7/450709

Inventors:

Kerry Kovacs - Centerville OH
Margaret T. Thomas - Medway OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

B01J 1300

US Classification:

264 47

Abstract:

A process for preparing microcapsules which comprises dispersing a hydrophobic oily liquid in a continuous aqueous phase, the hydrophobic oily liquid containing a pre-wall former and at least one chain extender, the chain extender being a polyhydric compound which is capable of reacting with the pre-wall former at a rate such that the chain extender does not substantially react with the pre-wall former prior to dispersing the hydrophobic oily liquid in the continuous aqueous phase; and forming capsule walls around the droplets of hydrophobic oily liquid in the continuous aqueous phase.

US Patent:

49685805, Nov 6, 1990

Filed:

Jan 18, 1990

Appl. No.:

7/467093

Inventors:

Chuan Lee - Centerville OH
Kerry Kovacs - Centerville OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

G03C 168
B41M 512
B41M 518

US Classification:

430138

Abstract:

A method for forming a full color photosensitive material in a single batch and the material produced thereby is disclosed. The method includes dispersing three internal phases, each containing a different color-forming agent in a continuous solution to form an emulsion, and thereafter forming mirocapsule walls around each of the internal phases. The invention is particularly characterized by the use of an agent to control intermixing of the internal phases.

US Patent:

51204754, Jun 9, 1992

Filed:

Apr 19, 1990

Appl. No.:

7/510920

Inventors:

Kerry Kovacs - Centerville OH
M. Teresa Thomas - Medway OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

B01J 1318

US Classification:

264 47

Abstract:

A method for preparing microcapsules which comprises: dispersing a hydrophobic oily liquid containing a pre-wall former in a continuous aqueous phase, the aqueous phase containing a chain extender which comprises a water soluble polyfunctional compound capable of reacting with the pre-wall former upon dispersion of the hydrophobic oily liquid in the continuous aqueous phase; and forming capsule walls around the droplets of the hydrophobic oily liquid in the continuous aqueous phase.

US Patent:

49295314, May 29, 1990

Filed:

Jul 13, 1988

Appl. No.:

7/218717

Inventors:

Chuan Lee - Centerville OH
Kerry Kovacs - Centerville OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

G03C 168
G03C 172

US Classification:

430138

Abstract:

A method for forming a full color photosensitive material in a single batch and the material produced thereby is disclosed. The method includes dispersing three internal phases, each containing a different color-forming agent in a continuous solution to form an emulsion, and thereafter forming microcapsule walls around each of the internal phases. The invention is particularly characterized by the use of an agent to control intermixing of the internal phases.